A random access method, an apparatus, and a system are disclosed. A terminal device receives, from a network device, information about a PRACH resource set and information about one or more PUSCH resources associated with each PRACH resource in the PRACH resource set. If a first PUSCH resource associated with a valid first PRACH resource in the PRACH resource set is valid, the terminal device sends a first preamble sequence to the network device on the first PRACH resource, and sends uplink data to the network device on the first PUSCH resource. The network device receives the first preamble sequence from the terminal device on the first PRACH resource, and receives the uplink data from the terminal device on the first PUSCH resource. The first preamble sequence is a preamble sequence set associated with the first PUSCH resource.
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5. The method according to claim 1, wherein the first PUSCH resource is a resource segment of a second PUSCH resource associated with the first PRACH resource, and the resource segment is used for repeated transmission of a PUSCH.
This invention relates to wireless communication systems, specifically methods for managing physical uplink shared channel (PUSCH) resources in scenarios involving repeated transmissions. The problem addressed is efficient resource allocation and utilization when a user equipment (UE) needs to retransmit data over a PUSCH, particularly in conjunction with physical random access channel (PRACH) procedures. The method involves assigning a first PUSCH resource as a segment of a second PUSCH resource that is linked to a specific PRACH resource. This first PUSCH resource is dedicated to repeated transmission of PUSCH data, allowing the UE to retransmit information without requiring a full new resource allocation. The segmentation approach optimizes spectrum usage by reusing portions of an existing PUSCH resource rather than allocating entirely new resources for each retransmission. This is particularly useful in scenarios where initial transmissions may fail due to interference or signal degradation, ensuring reliable data delivery with minimal overhead. The method improves efficiency in both time and frequency domains by reducing the need for repeated full resource allocations while maintaining synchronization with PRACH procedures.
10. The communications apparatus according to claim 9, wherein the at least one processor is further configured to receive first indication information from the network device via the transceiver, and wherein the first indication information indicates the third threshold.
This invention relates to communications apparatuses designed to optimize network performance by dynamically adjusting communication parameters based on network conditions. The problem addressed is the need for efficient and adaptive communication in wireless networks, where varying signal conditions and interference can degrade performance. The apparatus includes a transceiver for wireless communication and at least one processor configured to monitor communication quality metrics, such as signal strength or error rates. The processor compares these metrics against predefined thresholds to determine whether to adjust communication parameters, such as modulation schemes or transmission power. The apparatus also receives first indication information from a network device, which specifies a third threshold value. This threshold is used to further refine the decision-making process for parameter adjustments, ensuring optimal communication performance under varying network conditions. The processor may also adjust communication parameters based on additional thresholds, such as a first threshold for triggering parameter changes and a second threshold for reverting to default settings. The apparatus dynamically adapts to network conditions by continuously monitoring and adjusting communication parameters, improving reliability and efficiency in wireless communications.
11. The communications apparatus according to claim 7, wherein the first PUSCH resource is a resource segment of a second PUSCH resource associated with the first PRACH resource, and the resource segment is used for repeated transmission of a PUSCH.
This invention relates to wireless communication systems, specifically improving physical uplink shared channel (PUSCH) transmission efficiency in scenarios involving random access procedures. The problem addressed is the inefficient use of uplink resources during initial access or re-establishment phases, where repeated PUSCH transmissions may overlap or interfere with other transmissions. The apparatus includes a first physical random access channel (PRACH) resource for initial access and a second PUSCH resource associated with the first PRACH resource. The second PUSCH resource is divided into multiple resource segments, with at least one segment designated as a first PUSCH resource for repeated transmission of uplink data. This segmentation allows for flexible scheduling and reduces resource contention by isolating repeated transmissions from other uplink traffic. The apparatus may also include a second PRACH resource and a third PUSCH resource associated with it, where the third PUSCH resource is similarly segmented. The system ensures that repeated PUSCH transmissions do not interfere with other uplink communications by allocating dedicated segments for these transmissions, improving overall system efficiency and reliability.
16. The communications apparatus according to claim 15, wherein the at least one processor is further configured to send first indication information to the terminal device via the transceiver, wherein the first indication information indicates the third threshold.
This invention relates to wireless communications, specifically improving resource allocation and interference management in cellular networks. The problem addressed is efficiently managing communication resources while minimizing interference, particularly in scenarios where multiple devices share the same frequency spectrum. The invention provides a communications apparatus with enhanced control over resource allocation and interference thresholds to optimize network performance. The apparatus includes a transceiver for wireless communication and at least one processor. The processor is configured to determine a third threshold value, which represents a limit for interference or signal quality metrics. This threshold is dynamically adjusted based on network conditions, such as traffic load or interference levels. The processor then sends first indication information to a terminal device via the transceiver, where this information explicitly indicates the third threshold value. The terminal device uses this threshold to adjust its transmission parameters, such as power levels or resource usage, to comply with the network's interference constraints while maintaining reliable communication. The apparatus may also include additional features, such as determining multiple thresholds for different interference scenarios or adjusting thresholds based on historical data. The transceiver facilitates bidirectional communication with terminal devices, allowing the apparatus to monitor and control interference dynamically. By providing explicit threshold indications, the invention enables more precise and adaptive interference management, improving overall network efficiency and reliability.
17. The communications apparatus according to claim 13, wherein the first PUSCH resource is a resource segment comprised in a second PUSCH resource associated with the first PRACH resource, and the resource segment is used for repeated transmission of a PUSCH.
This invention relates to wireless communication systems, specifically improving physical uplink shared channel (PUSCH) transmission efficiency in scenarios involving random access procedures. The problem addressed is the need for reliable and efficient uplink data transmission when a user equipment (UE) initiates communication with a base station using a physical random access channel (PRACH) resource. Existing methods may not optimize resource allocation for subsequent PUSCH transmissions, leading to inefficiencies. The invention describes a communications apparatus that includes a processor and memory storing instructions for managing PUSCH resources. The apparatus assigns a first PUSCH resource linked to a PRACH resource for initial uplink transmission. Within this first PUSCH resource, a smaller resource segment is allocated for repeated transmission of the PUSCH. This segment is part of a larger second PUSCH resource also associated with the PRACH resource. The repeated transmission mechanism enhances reliability by allowing the UE to retransmit data if the initial transmission fails. The apparatus dynamically configures these resources to balance between initial transmission capacity and retransmission opportunities, improving overall system efficiency. The solution is particularly useful in scenarios with high interference or mobility, where retransmissions are more likely.
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August 13, 2021
June 4, 2024
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